From df62c1c110e8532b995b23540b7e3695729c0779 Mon Sep 17 00:00:00 2001 From: Jing Yu Date: Thu, 5 Nov 2009 15:11:04 -0800 Subject: Check in gcc sources for prebuilt toolchains in Eclair. --- gcc-4.4.0/libiberty/README | 66 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 gcc-4.4.0/libiberty/README (limited to 'gcc-4.4.0/libiberty/README') diff --git a/gcc-4.4.0/libiberty/README b/gcc-4.4.0/libiberty/README new file mode 100644 index 000000000..886bd67bc --- /dev/null +++ b/gcc-4.4.0/libiberty/README @@ -0,0 +1,66 @@ +This directory contains the -liberty library of free software. +It is a collection of subroutines used by various GNU programs. +Current members include: + + getopt -- get options from command line + obstack -- stacks of arbitrarily-sized objects + strerror -- error message strings corresponding to errno + strtol -- string-to-long conversion + strtoul -- string-to-unsigned-long conversion + +We expect many of the GNU subroutines that are floating around to +eventually arrive here. + +The library must be configured from the top source directory. Don't +try to run configure in this directory. Follow the configuration +instructions in ../README. + +Please report bugs to "gcc-bugs@gcc.gnu.org" and send fixes to +"gcc-patches@gcc.gnu.org". Thank you. + +ADDING A NEW FILE +================= + +There are two sets of files: Those that are "required" will be +included in the library for all configurations, while those +that are "optional" will be included in the library only if "needed." + +To add a new required file, edit Makefile to add the source file +name to CFILES and the object file to REQUIRED_OFILES. + +To add a new optional file, it must provide a single function, and the +name of the function must be the same as the name of the file. + + * Add the source file name to CFILES. + + * Add the function to name to the funcs shell variable in + configure.ac. + + * Add the function to the AC_CHECK_FUNCS lists just after the + setting of the funcs shell variable. These AC_CHECK_FUNCS calls + are never executed; they are there to make autoheader work + better. + + * Consider the special cases of building libiberty; as of this + writing, the special cases are newlib and VxWorks. If a + particular special case provides the function, you do not need + to do anything. If it does not provide the function, add the + object file to LIBOBJS, and add the function name to the case + controlling whether to define HAVE_func. + +The optional file you've added (e.g. getcwd.c) should compile and work +on all hosts where it is needed. It does not have to work or even +compile on hosts where it is not needed. + +ADDING A NEW CONFIGURATION +========================== + +On most hosts you should be able to use the scheme for automatically +figuring out which files are needed. In that case, you probably +don't need a special Makefile stub for that configuration. + +If the fully automatic scheme doesn't work, you may be able to get +by with defining EXTRA_OFILES in your Makefile stub. This is +a list of object file names that should be treated as required +for this configuration - they will be included in libiberty.a, +regardless of whatever might be in the C library. -- cgit v1.2.3